Founded in 1496, Santo Domingo is the oldest European settlement in the Americas. Since 1990, Ciudad Colonial (Colonial City) has been designated as a UNESCO World Heritage Site in its entirety. The 0.4 square mile area is filled with historic landmarks, homes and streets. Many of these sites date back to the 16th century. An example is this Cathedral of Santa María de la Encarnación, finished in 1541. Parque Colón (Columbus Park) is an excellent place to begin your walking tour. Let’s start with some of the noteworthy structures encircling this square (formally called Plaza Mayor).